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@northguild/gmt

isValidTimeZone

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Signature

Section titled “Signature”
isValidTimeZone(timeZone: string): boolean
import { isValidTimeZone } from "@northguild/gmt/zoned/validate";

Validate whether a string is a valid IANA timeZone identifier.

  • Uses Temporal.ZonedDateTime.from to test timezone validity.
  • Uses regex to check format.
  • Returns false for invalid timezone formats.

Parameters

Section titled “Parameters”
Parameter Type Description
timeZone string timeZone identifier to validate

Returns

Section titled “Returns”

boolean indicating validity

Examples

Section titled “Examples”
isValidTimeZone("America/New_York") // true
isValidTimeZone("Europe/London") // true
isValidTimeZone("Invalid/Timezone") // false

Source

Section titled “Source”

zoned/validate/isValidTimeZone.ts